I'm under 700 miles away from Calgary, but this one is a reach here during the summer daytime hours, and that Cuban jamming on 6030 can get in the way even after Radio Marti goes off the air. One of the ways I know seasonal conditions are changing is when CFVP comes in easier at all hours, usually in the fall and winter.
However, a couple nights this week, I've heard CFVP coming in over the jamming during local late-night hours. The irony, of course, is that the station's AM version on 1060 kHz booms in here at night year-round.